High-pressure bulge-forming system for tubular workpieces

Details High-pressure bulge-forming system for tubular workpieces High-pressure bulge-forming system for tubular workpieces

1995-04-14

1997-05-13

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72456, 72420, B21D 2602, B21J 1310

Patent

active

056282206

ABSTRACT:
An apparatus for high-pressure bulge forming of tubular workpieces has an upper die plate facing generally downward and extending at an acute angle to the vertical and a lower die plate generally parallel to and confronting the upper die plate. One of the plates is movable along an axis generally perpendicular to the plates toward and away from the other die plate. Respective upper and lower die halves carried on the die plates can fit together to form a die cavity having open ends and are adapted to receive a one of the workpieces with ends of the workpiece exposed at the open ends of the die cavity. The one die plate and the respective die half are displaceable toward and away from the other die plate. Respective actuators on the upper die plate have heads engageable with the ends of the workpiece in the die cavity and one head is formed with a passage for internally pressurizing the workpiece in the die cavity for bulge-deforming the workpiece. A robot takes a workpiece from a supply of the workpieces and fits it to the upper die half. A bin or the like is provided below the upper die half for catching workpieces dropped therefrom.

REFERENCES:
patent: 2252626 (1941-08-01), Goldbeck
patent: 3452577 (1969-07-01), Schmeltzer et al.
patent: 5396786 (1995-03-01), Bartholomew et al.
patent: 5415021 (1995-05-01), Folmer
patent: 5481892 (1996-01-01), Roper et al.
patent: 5499520 (1996-03-01), Roper

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